DTC P0335 Crankshaft Position Sensor "A" Circuit: Description

The crankshaft position sensor (CKP) system consists of a crankshaft position sensor plate and a pick-up coil. The sensor plate has 34 teeth and is installed on the crankshaft. The pick-up coil is made of an iron core and magnet. The sensor plate rotates and as each tooth passes through the pick-up coil, a pulse signal is created. The pick-up coil generates 34 signals per engine revolution. Based on these signals, the ECM calculates the crankshaft position and engine RPM. Using these calculations, the fuel injection time and ignition timing are controlled.

DTC DETECTION CONDITION

DTC No.	DTC Detection Condition	Trouble Area
P0335	No crankshaft position sensor signal to ECM (2 trip detection logic)	Open or short in crankshaft position sensor circuit Crankshaft position sensor Signal plate (crankshaft) ECM

Reference: Inspection using an oscilloscope.

Fig 1: Signal Waveform Graph

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

The correct waveform is as shown.

ITEM CONTENTS

Item	Contents
Terminal	CH1:G2-NE- CH2: NE+ - NE-
Equipment Setting	5 V/DIV., 20 ms/DIV.
Condition	During cranking or idling